Poeciloderrhis ferruginea (Brunner von Wattenwyl, 1865)

Cardoso de Oliveira da Silva, Leonardo & Lopes, Sonia Maria, 2015, Synopsis of Poeciloderrhis Stal, 1874, with the description of three new species, and a redescription of the male and female of Poeciloderrhisferruginea (Brunner von Wattenwyl, 1865) from southeast Brazil (Blattodea, Blaberidae, Epilamprinae), ZooKeys 545, pp. 53-65: 54

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Poeciloderrhis ferruginea (Brunner von Wattenwyl, 1865)


Taxon classification Animalia Blattodea Blaberidae

Poeciloderrhis ferruginea (Brunner von Wattenwyl, 1865)   Figures 1-10, 11-16

General coloration.

Shiny dark brown (Figs 1 and 11). Head with vertex, interocular space between ocellar fenestra and antennae brown. Two brown spots below ocellar fenestra. Maxillary palps with brown apical segment, with golden cilia. Eyes black (Fig. 2). Pronotum semi-transparent with dark brown punctuation (Fig. 3). Tegmen semi-transparent, light brown, bearing dark brown spots. Legs light brown with spines, arolia and claws brown. Abdomen light brown with brown punctation.

Dimensions (male) (mm).

Total length: 32; total length of pronotum: 6.57; width of pronotum: 7.5; length of tegmen: 27.1; width of tegmen: 6.1.


Triangular with rounded angles, vertex hidden in dorsal view; interocular space measuring about 1 mm; antennae long, slender and tomentose, reaching beyond apex of cerci. Eyes antero-lateral in position; maxillary palps with first and second segments reduced, the second measuring 0.41 mm, third segment 25% longer than fourth and 25% shorter than fifth segment, which is a little more dilated and very tomentose.


Pronotum wide, pentagonal, convex, with curved margins, base with small median projection. Legs developed, half of femur I with anteroventral surface bearing four strong spines, followed by series of small spines towards apex, where two strong apical spines are present; posteroventral surface with three strong spines, one apical; femora II and III showing strong spaced spines on their ventral surfaces. Pulvilli present on fourth tarsal segment, claws symmetrical and specialized, with two rows of small spines on ventral surface. Tegmen reaching beyond apex of abdomen. Marginal field wide, slightly concave, convex, curved, discoidal field convex and short at apex, anal field convex and well-marked.


Tergal modification pyramid-shaped, tall, with cilia, located on first tergite and depression followed by curved stalk on second tergite (Fig. 4). Supra-anal plate round with cerci reaching beyond the plate (Fig. 5). Subgenital plate asymmetric, with two slender styles, one long, and one short; larger style with sharper lateral tomentosity (Fig. 6). Left phallomere with median structure shaped as sclerotized cleft (Fig. 7). Median apical sclerite spiniform with intense sclerotization, with membranous sclerotized structure bearing lateral shaft and slender pre-apical structure (Figs 8, 9). Right phallomere with straight apex and a small spine next to apex; lateral portion of phallomere with spines (Fig. 10).

Dimensions (female) (mm).

Total length: 33.5; total length of pronotum: 7.7; width of pronotum: 9.45; length of tegmen: 29.3; width of tegmen: 7.8. Female larger than male; brown color of vertex extending to frons (Fig. 12); pronotum brown; in the abdomen, anal plate enlarged with indistinct slit medially, cerci poorly developed reaching apex of plate (Fig. 14); subgenital plate triangular (Fig. 15); female genitalia in three pairs of valves, of which the first is the most developed and widens toward apex, the second is the smallest and most sclerotized, and the third is more slender apically and slightly smaller in length than the first. Valvifers tapered and very small (Fig. 16).

Material examined.

1 ♂ Brazil, Minas Gerais, Catas Altas, RPPN Serra da Caraça, collected at 1490 m; 3 to 7/XII/ 2013. J. P. Botero, A. Carelli & G. C. Queiroz cols; 1 ♀ Brazil, data the same as for male.


The male of Poeciloderrhis ferruginea   differs from the male in the size of the body, brown color of the vertex extending to the frons; enlarged supra-anal plate with indistinct median indentation, cerci poorly developed reaching apex of the plate; subgenital plate triangular; female genitalia with 3 pairs of valves; valvifers slender and small.